A4 Quattro Sedan L4-2.0L Turbo (CAEB) (2009)
Compressor Pulley: Description and Operation
Compressor Pulley
Compressor Pulley
‹› If overload protection of pulley triggers, check compressor for ease of motion before replacing the pulley. If compressor creates friction, replace it
completely.
‹› To remove the pulley, it is not necessary to loosen the compressor from the engine, refer to => [ A/C Compressor ] See: Service and Repair.
Depending on the engine type, it may be necessary to loosen the lock carrier from the vehicle and to pull it slightly forward to make space.
‹› Different versions of the pulley with different diameters may be installed, depending on compressor construction type and engine version.
‹› As a replacement part, the pulley with the drive plate wand the cap come under one part number. The pulley and the drive plate are held together
with one bolt (when the bolt is no longer needed, dispose of it). When the bolt was manufactured, a predetermined amount of a specific grease was
applied to the threads in the drive plate; this amount is sufficient for bolting the drive plate to the compressor one time (a drive plate, which has
been removed, cannot be reused).
‹› Pulley, removing from compressor and re-installing, refer to => [ Compressor Pulley ] See: Service and Repair
1
Cap
2
Drive Plate
‹› Replace
‹› bolted with the compressor driveshaft, clean the compressor shaft thread before mounting the drive plate.
‹› The thread of the new drive plate has already been greased with a specific amount of a grease by the manufacturer.